Soil Salinity Research and Mapping using Remote Sensing GIS

Abstract

The research study evaluated the soil salinity by using special scientific tools like Remote Sensing and GIS technology, so that proper measurements could be taken for the sustainable agriculture and water management. A study to evaluate an irrigation system in the dry and semi-dry zone of straight Salyan, The study is made on the basis of salinity to evaluate the system. The primary data use for the study was the satellite images. This study employed an index-based approach of using Geographic Information System with field data. The satellite images of four different years was used to examine the effective area. Several combinations of the ratio of signals received in different spectral bands were used for development of this index. Near Infrared and Thermal IR spectral bands proved to be most effective as this combination helped easy detection of salt affected area. The results were confirmed by field research and laboratory analysis. The research will not only RS base for this field measurement also required for verification and correction. Several combinations of the ratio of signals received in different spectral bands were used for development of this index.